. >> and i'm diane dwyer. there's a manhunt happening right now at a ski resort in southern california. s.w.a.t. teams took advantage of a break in the weather to search for one of the most wanted men in america. christopher dorner is a former los angeles police officer and he's suspected of killing three people. kimberly tere joins us from the newsroom with the latest on the search including an update from police that just came into our newsroom. >> reporter: los angeles police say they will reopen the investigation into the firing of then officer christopher dorner, which happened exactly four years ago today. it was ann incident that investigators believe led to the killing of three people. >> it is an injustice collective. he collects injustices and never lets them go. evidently they finally reach the tipping pointing that led to the series of violent acts the last several days. >> reporter: police continue to search the snowy big bear lake resort for 33-year-old christopher dorner. his burned-out pickup t